SYSTEMS AND METHODS OF PERFORMING DATA TRANSMISSION AND RECEPTION IN A COMMUNICATION SYSTEM

    公开(公告)号:US20200252245A1

    公开(公告)日:2020-08-06

    申请号:US15774397

    申请日:2016-11-01

    Abstract: Systems and methods of performing data transmission and reception in a communication system are presented. In one exemplary embodiment, a method performed by a wireless device for transmitting a signal in a first communication system that is frequency-domain multiplexed with a second communication system may include generating (201), by a modulator (401), a modulated signal that represents one or more information symbols. The modulated signal may include one or more modulation symbols of the first communication system. The method may also include filtering (203), by a pulse shaping filter (403), the modulated signal to obtain the filtered modulated signal. The pulse shaping filter (403) may be configured to operate with a period that corresponds to the symbol rate of the second communication system. In addition, the method may include transmitting (209), by a transmitter (409), the filtered modulated signal at a carrier or sub-carrier frequency of the first communication system.

    Method of data modulation adapted to selected modulation rotational angle
    2.
    发明授权
    Method of data modulation adapted to selected modulation rotational angle 有权
    适用于所选调制旋转角的数据调制方法

    公开(公告)号:US08848683B2

    公开(公告)日:2014-09-30

    申请号:US12864307

    申请日:2008-11-11

    CPC classification number: H04L1/0038 H04L1/0003 H04L5/12 H04L27/18 H04L27/3444

    Abstract: In a method, modulator, transmitter and receiver, the modulator of data signals to be transmitted simultaneously to at least two receiving mobile stations in the same transmission time slot is adapted to select rotational angle of a QPSK transmission modulation, such as a hybrid α-QPSK modulation used to modulate the data signals to the at least two mobile stations in response to the capabilities of the mobile stations that share the same transmission slot.

    Abstract translation: 在一种方法中,调制器,发射机和接收机将同时传输到相同传输时隙中的至少两个接收移动台的数据信号的调制器适于选择QPSK传输调制的旋转角度, QPSK调制用于响应于共享相同传输时隙的移动站的能力而将数据信号调制到至少两个移动站。

    Frequency hopping offsetting for multiple users reusing one slot (MUROS)
    3.
    发明授权
    Frequency hopping offsetting for multiple users reusing one slot (MUROS) 有权
    针对多个用户重复使用一个插槽的跳频偏移(MUROS)

    公开(公告)号:US08358678B2

    公开(公告)日:2013-01-22

    申请号:US12346619

    申请日:2008-12-30

    CPC classification number: H04B1/7143

    Abstract: First and second groups of mobile terminal communications in a cell are defined. A basic frequency hopping sequence for both groups is identified. An offset from the basic hopping sequence is determined for each mobile terminal communication in the first and second groups and is used along with the basic frequency hopping sequence to generate an assigned frequency hopping sequence for each mobile terminal. Some of the assigned frequency hopping sequences overlap such that a first communication from the first group and a second communication from the second group simultaneously use the same time-frequency radio resource during one hop in their corresponding assigned frequency hopping sequences. The first and second mobile terminal communications use a different time-frequency radio resource during another hop in their respective assigned frequency hopping sequence thereby varying the offset for each mobile terminal communication in the second group to improve interference diversity between the two groups for each hop.

    Abstract translation: 定义了小区中的第一和第二组移动终端通信。 识别两组的基本跳频序列。 对于第一和第二组中的每个移动终端通信确定与基本跳频序列的偏移量,并与基本跳频序列一起使用,以为每个移动终端生成分配的跳频序列。 一些分配的跳频序列重叠,使得来自第一组的第一通信和来自第二组的第二通信在其相应的分配的跳频序列中的一跳期间同时使用相同的时频无线电资源。 第一和第二移动终端通信在其各自分配的跳频序列中的另一跳期间使用不同的时频无线电资源,从而改变第二组中的每个移动终端通信的偏移,以改善每个跳的两组之间的干扰分集。

    METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM
    5.
    发明申请
    METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM 有权
    电信系统中的方法和布置

    公开(公告)号:US20110188563A1

    公开(公告)日:2011-08-04

    申请号:US13014090

    申请日:2011-01-26

    CPC classification number: H04L25/0224 H04L27/2605

    Abstract: By exploiting the multi-block structure of the used slot format having a training sequence in the time domain and at least one pre-coded user data block to sequentially reconstruct the slot, using in the first act known symbols and using detected symbols in each subsequent act and improved receiver may be provided. This may result in less ISI/IBI and therefore increased performance.

    Abstract translation: 通过利用在时域中具有训练序列的所使用的时隙格式的多块结构和至少一个预编码的用户数据块来顺序地重构时隙,在第一动作中使用已知的符号并且在每个后续的步骤中使用检测到的符号 可以提供动作和改进的接收器。 这可能导致较少的ISI / IBI,从而提高性能。

    Adjacent channel interference supression
    6.
    发明授权
    Adjacent channel interference supression 有权
    相邻通道干扰抑制

    公开(公告)号:US07822385B2

    公开(公告)日:2010-10-26

    申请号:US11710617

    申请日:2007-02-26

    Applicant: Miguel Lopez

    Inventor: Miguel Lopez

    CPC classification number: H04B1/1036

    Abstract: Adjacent channel interference (ACI) suppression is achieved by selectively applying one or more pre-calculated fixed filters only when necessary, thereby preserving the sensitivity of the receiver. An energy detector accurately detects adjacent channel interference in the frequency band of the desired signal so that the likelihood of a false detection of ACI is very low. If the energy detector detects adjacent channel interference is present in the band of the desired signal, then the received signal is selected to be filtered by the pre-calculated filter, e.g., a low pass filter. Otherwise, the pre-calculated filter is bypassed. In either case, additional ACI suppression processing may be employed.

    Abstract translation: 通过仅在必要时选择性地施加一个或多个预先计算的固定滤波器来实现相邻信道干扰(ACI)抑制,从而保持接收机的灵敏度。 能量检测器精确地检测所需信号的频带中的相邻信道干扰,使得ACI的错误检测的可能性非常低。 如果能量检测器检测到相邻信道干扰存在于期望信号的频带中,则接收信号被选择为被预先计算的滤波器例如低通滤波器滤波。 否则,旁路预先计算的过滤器。 在任一情况下,可以采用额外的ACI抑制处理。

    Adjacent channel interference supression
    7.
    发明申请
    Adjacent channel interference supression 有权
    相邻通道干扰抑制

    公开(公告)号:US20070254590A1

    公开(公告)日:2007-11-01

    申请号:US11710617

    申请日:2007-02-26

    Applicant: Miguel Lopez

    Inventor: Miguel Lopez

    CPC classification number: H04B1/1036

    Abstract: Adjacent channel interference (ACI) suppression is achieved by selectively applying one or more pre-calculated fixed filters only when necessary, thereby preserving the sensitivity of the receiver. An energy detector accurately detects adjacent channel interference in the frequency band of the desired signal so that the likelihood of a false detection of ACI is very low. If the energy detector detects adjacent channel interference is present in the band of the desired signal, then the received signal is selected to be filtered by the pre-calculated filter, e.g., a low pass filter. Otherwise, the pre-calculated filter is bypassed. In either case, additional ACI suppression processing may be employed.

    Abstract translation: 通过仅在必要时选择性地施加一个或多个预先计算的固定滤波器来实现相邻信道干扰(ACI)抑制,从而保持接收机的灵敏度。 能量检测器精确地检测所需信号的频带中的相邻信道干扰,使得ACI的错误检测的可能性非常低。 如果能量检测器检测到相邻信道干扰存在于期望信号的频带中,则接收信号被选择为被预先计算的滤波器例如低通滤波器滤波。 否则,旁路预先计算的过滤器。 在任一情况下,可以采用额外的ACI抑制处理。

    Uninterrupted electric feed system with unlimited autonomy without
electric accumulators
    8.
    发明授权
    Uninterrupted electric feed system with unlimited autonomy without electric accumulators 失效
    不间断电力供电系统,无需电力蓄能器即可实现无限自主

    公开(公告)号:US5373198A

    公开(公告)日:1994-12-13

    申请号:US61818

    申请日:1993-05-13

    Abstract: The system ensures electric feed for which purpose it has an alternating current motor (1) coupled to an alternator (2) which is coupled to a hydraulic motor (8) which in turn is coupled to a diesel engine (7.)The alternating current motor is coupled by means of a clutch (6) to a high pressure pump (5.)All the elements are governed by a control circuit (4) so that in the absence of network, it simultaneously drives the diesel engine (7) and the hydraulic motor (8) the latter initially maintaining the angular speed of the alternator, until the diesel engine (7) attains its normal working conditions; as of when it is mechanically coupled to the alternator (2), the hydraulic motor (8) remaining turned off.The high pressure pump is capable of being directly coupled to the diesel engine (7) with which the hydraulic motor (8) is the one which maintains the angular speed of the alternator (2) at all times.

    Abstract translation: 该系统确保电力供给,为此目的,它具有耦合到交流发电机(2)的交流电动机(1),该交流发电机耦合到液压马达(8),该液压马达又连接到柴油发动机(7)。交流 电机通过离合器(6)连接到高压泵(5)。所有元件由控制电路(4)控制,使得在没有网络的情况下,它同时驱动柴油发动机(7)和 液压马达(8)最初保持交流发电机的角速度,直到柴油发动机(7)达到其正常工作状态; 当液压马达(8)被机械联接到交流发电机(2)时,液压马达(8)保持关闭。 高压泵能够直接联接到柴油机(7),液压马达(8)通过该柴油发动机(7)始终保持交流发电机(2)的角速度。

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